173 lines
9.1 KiB
HTML
173 lines
9.1 KiB
HTML
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<meta name="DC.Title" content="CCSID (Coded Character Set Identifier) keyword" />
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<meta name="abstract" content="You use this file-, record-, or field-level keyword to specify that a G-type field supports Unicode data instead of DBCS-graphical data. Like DBCS-graphic characters, Unicode code units are two bytes long." />
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<meta name="description" content="You use this file-, record-, or field-level keyword to specify that a G-type field supports Unicode data instead of DBCS-graphical data. Like DBCS-graphic characters, Unicode code units are two bytes long." />
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<meta name="DC.subject" content="CCSID (Coded Character Set Identifier) keyword, UCS-2 level 1, UCS-2 level 1, CCSID (Coded Character Set Identifier) keyword" />
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<meta name="keywords" content="CCSID (Coded Character Set Identifier) keyword, UCS-2 level 1, UCS-2 level 1, CCSID (Coded Character Set Identifier) keyword" />
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<title>CCSID (Coded Character Set Identifier) keyword</title>
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<body id="rzakcmstdfusc2"><a name="rzakcmstdfusc2"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">CCSID (Coded Character Set Identifier) keyword</h1>
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<div><p>You use this file-, record-, or field-level keyword to specify
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that a G-type field supports Unicode data instead of DBCS-graphical data.
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Like DBCS-graphic characters, Unicode code units are two bytes long.</p>
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<div class="section"><div class="p">The format of the keyword is: <pre>CCSID(Unicode-CCSID | &Unicode-CCSID-field | *REFC
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[field-display-length | *MIN | *LEN display-positions])</pre>
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</div>
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<p>The
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Unicode-CCSID parameter is required. Use the Unicode-CCSID parameter to specify
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a CCSID that uses a Unicode encoding scheme for this field. The Unicode-CCSID
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parameter can be specified either as a number up to 5 digits long or as a
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program-to-system field. You must define the program-to-system field with
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a length of 5 and with the S data type.</p>
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<p>A special value of *REFC can
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be specified instead of a Unicode-CCSID value. It is valid only on reference
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fields, and the referenced field must be coded with a CCSID keyword specifying
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a Unicode-CCSID value. Normally, the display file CCSID keyword will override
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any CCSID keyword attributes taken from the referenced field. If *REFC is
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specified, the Unicode-CCSID value is taken from the referenced field.</p>
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<p>The
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field-display-length parameter is optional and is valid only when the CCSID
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keyword you specify it at the field level. You specify the field-display-length
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as the number of Unicode code units.</p>
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<p>When Unicode data is involved in
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an output operation, the data is converted from the associated Unicode CCSID
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to the CCSID of the device. Generally, the length of the data will change
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when this conversion occurs. Therefore, you can use the field-display-length
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value to specify a displayed field length that is different from the default
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displayed field length. The default displayed field length of a 'G' data type
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field is twice the number of code units that are specified for the field length.</p>
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<p>The
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field-display-length value can help avoid truncation of field data when the
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data length will be longer after conversion than the default displayed field
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length. The field-display-length value can also help increase the available
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line space by limiting the displayed field length when the data length will
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be shorter after conversion. The field length will still be used to define
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the field's output buffer length.</p>
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<div class="p">For example, a display file contains
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the following line: <pre>FLD1 10G B 2 2 CCSID(X Y)</pre>
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<ul><li>X is the Unicode-CCSID associated with the field data. Y is the field-display-length
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of this field. If you do not specify Y, then FLD1's length on the screen is
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20 single-byte characters (twice the number of code units specified on the
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field length).</li>
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<li>If you know that the Unicode data is constructed from single byte data,
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then you can specify the field-display-length, Y, as 5 Unicode code units.
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FLD1 will have a length of 10 single byte characters on the screen (twice
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the number of code units that are specified on the field-display-length).</li>
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<li>If you know that the Unicode data is constructed from double-byte data,
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then you can specify the field-display-length, Y, as 11 Unicode
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code units. FLD1 will have a length of 22 single byte characters on the screen.
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This will allow space for the shift-out and shift-in characters.</li>
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</ul>
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</div>
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<p>A special value, *MIN, can be specified instead of a field-display-length.
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This value will be used to specify a field length defined in terms of display
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positions. This value causes the field length on the screen to be equal to
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the number of Unicode code units defined in the DDS.</p>
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<p>A special value,
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*LEN, along with a display-positions value can be specified instead of a field-display-length.
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This value is used to specify a field length defined in terms of display positions.
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This value causes the field length on the screen to be equal to the display-positions
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value.</p>
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<p>If the CCSID keyword is specified at both the field-level and
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the record- or file-level, the field-level keyword takes precedence.</p>
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<p>On
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output, field data that is longer than the specified field length is truncated.
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On input, if too many characters were entered into the Unicode field, then
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the field is reverse imaged and an error appears on the error line stating
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too many characters were entered. You need to press reset and correct the
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field. The maximum number of characters to enter is conveyed in the error
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message.</p>
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<p>The CCSID keyword can be specified with all of the following
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field level keywords:</p>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" width="100%" frame="void" border="0" rules="none"><tbody><tr><td valign="top" width="33.33333333333333%"><p>ALIAS<br />
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AUTO(RA)<br />
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BLANKS<br />
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CHANGE<br />
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COLOR<br />
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DFT<br />
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DLTCHK<br />
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DSPRL<br />
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DUP<br />
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CHECK(FE)<br />
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CHGINPDFT</p>
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</td>
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<td valign="top" width="33.33333333333333%"><p>DFTVAL<br />
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DSPATR(BL)<br />
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DSPATR(CS)<br />
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DSPATR(HI)<br />
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DSPATR(MDT)<br />
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DSPATR(ND)<br />
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DSPATR(PC)<br />
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DSPATR(PR)<br />
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DSPATR(RI)<br />
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DSPATR(UL)<br />
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ENTFLDATR</p>
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</td>
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<td valign="top" width="33.33333333333333%"><p>ERRMSG<br />
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ERRMSGID<br />
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FLDCSRPRG<br />
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INDTXT<br />
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OVRATR<br />
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OVRDTA<br />
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PUTRETAIN<br />
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REFFLD<br />
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SFLCSRPRG<br />
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TEXT</p>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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<p>Option indicators are not valid for this keyword.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Example</h4><p>The following example shows how to specify
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the CCSID keyword.</p>
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</div>
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<div class="example"> <pre>|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
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00010A CCSID(13488)
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00020A R RECORD1
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00030A FIELD1 30G
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00040A FIELD2 10G CCSID(61952 6)
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00050A R RECORD2 CCSID(1200)
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00060A FIELD3 20G
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00070A R RECORD3
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00080A FIELD4 10G CCSID(61952 *MIN)
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00090A FIELD6 10G CCSID(1200 *LEN 8)</pre>
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<p>FIELD1
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is assigned a CCSID value of 13488. FIELD2 is assigned a CCSID value of 61952
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and has a field length of 6 Unicode code units long (12 SBCS characters).
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FIELD3 is assigned a CCSID value of 1200. FIELD4 will use 10 display positions
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on the screen. FIELD6 will use 8 display positions on the screen.</p>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="ucs2kwd.htm" title="The DFT keyword can contain SBCS, bracketed-DBCS, or bracketed-DBCS-graphic character strings when specified on a Unicode-capable field.">Keyword considerations for display files that use Unicode data (positions 45 through 80)</a></div>
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</div>
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</div>
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</body>
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</html>
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